<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var timer = setInterval(function(){
				console.log("你好，世界");
			},1000);
			clearInterval(timer);
		</script>
	</body>
</html>
